Cylinder-bar for threshing-machines.



W. A. THELBAR.

CYLINDER BAR FR THRESHING MACHINES.

APPLIOATION FILED MAY l5, 1911.

Patented Nov. 28, 1911.

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tinrn entras rngnnr rricn WILLIAM A. THIELBAR, OF MORTON', ILLINOIS.

lCYLINIDEIR-13.12A?, FOR THRESHING-MACHINES.

Specication of Letters Patent.

Patented Nbv. v2s, 1011.

pplcaton filed May 15, 1911. Serial No. 627,272.

To all whom it may concern:

Be it known that I, VILLIAM A. Trrniinan, a citizen oi the United States, residing at Morton', in the county of Tazewell and State a .enedr and thrown out from the cylinder.'

The invention comprises a. cylinder bar wherein teeth provided with anchoring toes may be locked in the cylinder bar against possibility of accidental release therefrom, 1 and th'e locking means are held with a ininis mum number of fastening dcvices,whereb v the liability of the teeth becoming loosened and thrown from the cylinder by centrifugal force is reduced to a negligible miniiii'um. Each bar has passages therethrough tor the respective teeth carried by the bar and the bar is also provided with ay channel in which may be seated a locking member engaging all the teeth simultaneously in a manner to hold them against the possibility of escape, while fastening means :tor the loeking'men'ibei' are provided which will permit the re-v moval of the locking member when desirable, but which are not at come accidentally loosened.

The invention will be best understood froina consideration ot' thev following detailed description, taken in connection with the accompanying drawings forming a part of this specification, with the understanding, however, that'while the drawings show an operative forni of theinvention it may be embodied in other forms, wherefore the invention not confined tothe exact showing of the drawings. i

In the drawings:Figure--Iis an eleva.-`

t-ion of a cylinder bar constructed in accordance with the present invention. Fig. 2 is a section on the line 2-2 of Fig. l but drawn to a larger scale. Fig. 3 is a section on the line 3-3 of Fig. 2. l `ig.i is a perspective view of a. portion of the locking bar. Fig.

vv5 is a longitudinal section of a portion or" the cylinder bar through one of the locking all liable to be-k l l I l il l l i l l l l l l l each passage .channel 2 about midway of the width l bolt passages, the bolt being shown in elevation.

Referring to the drawings, there is shown cylinder bar l which isdesigned' to :be placed in the cylinder in thepusualnianner, and through this cylinder bar there is a longitudinal channel 2, substantially rectangular in cross section and designed to vreceive a locking bar 3 snugly yet freely.

The eyliuderbar adjacent the channel 2 is provided with a suitable number of passages at extending through the bar from the outer tace to the inner face and opening `throingh both faces.

These passages rare slightly inclined to the corresponding 'faces through which they pass. and are likewise inclined to the passage 2. Near each end the cylinder bar is provided lwith another passage 5, which may be perpendicular to the outer and inner faces of the bar, and 5 opeiisinto the passage or thereof.

T here are providedcylinder teeth r spikesG, the main bodies of which may be shaped as is customary, and at one end each spike is Jformed with a shank 7 edge S inclined and-the other edge 9 substantially parallel with the longitudinal axis of the tooth or spike. The edge 8, 'therefore, approaches the edge 9 toward the end ot the shank remote from the body portion of the tooth or spike, and at the termination of the edge 8 the shank is formed with `a projecting toe. 10. The edge 9 meets the body portion of the tooth or spike at a short distance from the corresponding ledge of the body portion, thereby forming a sholllder ll.

The passage 4 is of such Width transversely of the bar l as to permit the introduction of the shank-7 with its projecting toe 10 when the tooth or spike 6 is tilted with relation' to its final position, andthe tooth 10 is tapered so thatt may be engaged under the inner face `of the bar .1, considering the outer face' as uppermost, with the shoulder lhl in engagement with such outer orupper face, in which position of theparts the edge 8 is in engagement with the` corresponding portion of the passage 4, while the edge 9 is a short distance having one ber corresponding with the passages 4fA The bar 3 has passages l15 therethrough, which may be brought into coincidence with the passages 5 andthese passages 15 are somewhat elongated'in the direction of the length of the bar 3. v 4

When the bar .3, which constitutes the locking bar or member,is introduced into the passage 2, the shoulders 13 may be brought into coincidence with the corresponding sides of the passages 4, and then there is ample room for the introduction offA the shank ends 7 of the teeth or-spikes 6. When, however, these several teeth or spikes are in i lace, the bar 3 is moved in the direction o its length'to bring theinclind portions 14 of the notches 12 against the edges 9 ofthe shanks, thus forcing the edges 8 against the corresponding end walls or' the passages t With the toes 10- in underriding relation to' the inner faces 'of the hars 1. Under these conditions the passages are in ,coincidence With the passages 5, and these passages 15 as Well'as the portion of the passages 5 opening at the outer tace of the bars 1, may have one end Wall inclined or tapered for the reception of a tapered or Wedge shaped bolt 16, the smallv end oi which terminates in a threaded shank 17 I'designed to receive a nut 18, whereby the taper /or Wedge portion of the bolt 16 will engage the bar 3 and force the same lengthwise to bring the inclined portions 14 ot' the several notches 12 into irm engagement with the edges 9 of the several teeth or spikes 6 carried by the respective bar 1. The Llock 'bar 3 positively engages the several spikes `or teeth 6 and the toes 10 ofthelatte'r positively prevent any movement of the teeth or spikes away from the bar 1, so that there is no possibility of the teeth or spikes flying out from the threshing cylinder during the `operation of the latter, this throwing out of the teeth by the action of centrifugal force, as sometimes happens when the-fastening devices become loosened, being {the cause ot injury to the operatives feeding threshing machines. l Y

Thelivedgebolts 1G, of which onlytWo are emtploye'l in each bar, are located near the ends of the respective bars 1, and the shape of these wedge bolts causes them to jam tightly in place against liability of accidental. displacement, even though vthe nuts 18 should become loose, but since there' are only two such nuts'in each bar, it is an bar 3 lis `formed'v With fa series. of.

easymatter to so arrange these devices t-hat the nuts are not hable to loosen. I ecause there are but two bolts to remove 1n each bar, the entire set of teeth inha bar are readily inserted or removed in a minimum space of time, and these bolts being close to the respective heads of the cylinder are readily manipulated, and do not require the operator to reach into the cylinder to any ymaterial extent, and are both readily visible and accessible, Vsince they are located but a few inches from t-he heads of the cylinder. The. teeth or spikes 6 are, of course, introducible and removable at the exterior of the cylinder, and hence are at all times readily accessible. Moreover, the lookin bar passing through the channel in the cy inder bar is movable into and out of position with the greatest facility and does nothave to be supported by hand or other- Wise While the teeth or spikes are being introduced into or removed from the bar 1.

' It is customary to provide the threshing machine with suitable doors coincident with `the ends of the cylinder for the introduction or removal of the bars 3, and the latter being Wholly confined Within the vbars 1 cannot escape therefrom.

l/Vhat is claimed is i 1. A cylinder bar for threshing machines having a longitudinal channel therethrough and provided with passages in traversing relation to the bar and in part to said channel, threshing teeth or spikes each provided with a'shank of a length to extend through a corresponding passage throughvthe bar and having a toe at the extremity of the shank for engaging the corresponding face of the bar, and a locking bar adapted to the channel through. the -cylinder bar, said locking bar having notches therein adapted to permit the free passage of the Shanks'of the threshing teeth and having inclined or wedge-shape portions each at one end ofa respective notch and adapted to engage and lock the teeth with the toes ofthe latter in underriding relation to the inner faces of the cylinder bars.

2. A bar for threshing cylinders 'having avlongitudinalrchannel therethrough Wholly within: the body of the bar, and also havingk passages extending `through the outer and inner faces of the bar in inclined relation to said 'faces and in part traversing the channel through the bar, spikes or teeth each formed with a Ashank having a laterally extending toe at the free end and adapted to pass through the corresponding passage in the cylinder bar, a locking slide or bar adapted to the channel through the cylinden bar,'said locking slide or bar. havingvnotches in one edge matching the-inclined passages'through the cylinder bar,

each notch having an extension With one vwill inclined longitudinally nf the slide,

5 engaging relation to t e Shanks of the teeth 'lor' spikes yto `lock. the toes of said Shanks in underridingrelation 15ol the inner face of y the cyllinluer ball,

In testimollythait ,I claim the foregoing as my own, I have hereto affixed my signai 10 ture in the presence of two Wltnesses.

WILLIAM A. THIELBAR.

Witnesses:

y WILLIAM GRIMM,

ANDREW SEIDEL. 

